I have a small 10g salt tank I want to start a Mini-Reef in. Right now I only have a 18" T8 8000K bulb and would like to upgrade so I can accomodate some high(er) light corals. The bulb I got now may support some common Mushrooms, but I don't want a tank full of Mushrooms. Anyone have any suggestions for a good reef capable light fixture for a 10g(20") tank?